{
  "manageEntity": {
    "action": "Update",
    "entityId": "437119900",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7c335c69fb0b3c22e8baa514a0f3a0312fbb40e302ae21a1365aea512171a88d",
    "signature": "0x7c8d7a9b75a6c0cf09d3d3f247affc8aa75d41c933dacbe8c1b05ee4197d0c233a68cec53f76512303f4d8ea83262e7a952ffe3a6db7ed3987d5533c91f8f1651c",
    "signer": "0xbFD30ab550690D0820B278e17a616BBe38a2C27d",
    "userId": "437119900"
  }
}