{
  "manageEntity": {
    "action": "Update",
    "entityId": "576874887",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf883757a6eb7c6e86648288d0b1298f086790eb86649905eb495f95ab3fbd148",
    "signature": "0x9d83f7dfde9162a7d50717865361183d160445cc9be678e660a9328973ef4c667d887646ada0707821bc98c7744253f431bf308060d4bbbf8f0130936bf554ad1c",
    "signer": "0x74Cfba397474D1C8E5568957E9684113ad5A2Bd8",
    "userId": "576874887"
  }
}