{
  "manageEntity": {
    "action": "Update",
    "entityId": "301375031",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x18bc89aa7c1e4688743a78078f926ff0b4a96ff8064b0c73ff1087947201c109",
    "signature": "0x342a0d5d509a509e9a4a138215a58ae6ab6549dc2401b12ea54c52c6cfde7c470210288ddee4d7665759f420fb51d373dbf298cdcb90a7f8a9d50a6db834cec11b",
    "signer": "0x8EbB0297003F8F79082fee75F2Ab935eED775B56",
    "userId": "301375031"
  }
}