{
  "manageEntity": {
    "action": "Update",
    "entityId": "318141912",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8e1313d22d7b5ed4a02de5352025369ed32c1d1ed51a749959a3e72627b6b3ae",
    "signature": "0xd966b45451548ce55453d02e0b9a324767c18b4ad77e2e30026dcf0405a88d6c07ed159a0905e98c75bc19b47e0f182520e1b37ae777d11279e3f38823bb098b1b",
    "signer": "0xFb889eCb7ccb573f854D98A256511C27F2211D50",
    "userId": "318141912"
  }
}