{
  "manageEntity": {
    "action": "Update",
    "entityId": "152378654",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x28f709687f350b028aeb9a0e97d9e03a8643f71ba8a1e53d854ac251964686bc",
    "signature": "0x608213ad9f99f8ad83582b5b382f18321b2bff6e31359351aaeff7d4612a86f12c3b9d39f647b3cb1bda35f3a2ad403e1f14ab3f024ba67d6215a881166724771b",
    "signer": "0x563EE268f30985Ed6dF43E3c9CeC87Ed136e697C",
    "userId": "152378654"
  }
}