{
  "manageEntity": {
    "action": "Update",
    "entityId": "355821525",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc1e3978635b57308c5a341b21c09546f6ce9a30681e9791147a811f165a06c2f",
    "signature": "0x207ae684452f8c58ae511c40b742c791ebdc61c3d94b3bda449f7d5755dc73e75f1eb26da3732a8d08b7a119ea4a6f9be511774678b51fb94aefc60199cdcd221c",
    "signer": "0xad430E05c9B02189c988498849C11CFC0626798A",
    "userId": "355821525"
  }
}