{
  "manageEntity": {
    "action": "Update",
    "entityId": "647066457",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x02212cb7f9e107a5d3585725691e934ec4a28df9e50c206fb77c69ebac6fe4d7",
    "signature": "0x2eddf3b82408ecb7b08ff89105cf2dbb31f6000fd08204379b34c49ec46da3f05f2fd04f6aa93d384227d83ddb5882c64eb3bebb6e45bdad8bd6b9a676c277621c",
    "signer": "0x1A27383fb285340d41C3d5315C6d8b0ECFc3E9BB",
    "userId": "647066457"
  }
}