{
  "manageEntity": {
    "action": "Update",
    "entityId": "554920508",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x823d9c07a46a75e8248da54d2bb4dc1bc31eb9120899befe9190d7d9b2ae5977",
    "signature": "0x5ce60b3af8d4deaad0e722de547b217c1302a1b58dc54669bfafaaca3983891a44a431783de583bb57ba443a01f8184898e39a4308f6b30d3c46eebf56bf61d51b",
    "signer": "0x989faEfE658E0b6dF1793197b0De4137Cb1aDD3b",
    "userId": "554920508"
  }
}