{
  "manageEntity": {
    "action": "Update",
    "entityId": "734807537",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraednos6u46ubf5clleeu4meo44jbl676ql66nrflsxipayqytqeua\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1553757310},{\"type\":\"playlist\",\"playlist_id\":572746756}]}}}",
    "nonce": "0xa402091579aafbd84b7ecf88e6a212f2aacc1ae44e632af01e4a5bd58e5f429e",
    "signature": "0x3aa32fa78ebe57a96b443903a79113b60724849869acff5d0dbf7c01b8c111fb3d3f1994ad12456a4ac3240ea7d777b4c17a70f8d2bc27584d9e59501afdca301b",
    "signer": "0xCD42dAf1DC6E7F8c4829427Ef69E968d2d22a5B3",
    "userId": "734807537"
  }
}