{
  "manageEntity": {
    "action": "Update",
    "entityId": "518873206",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0da950b103159c80b9de798c4bdb7cf53d97b1151d403bc8cf72dceccf92b84e",
    "signature": "0xb30e4bae3367c462811c2fc35d303795d0f757131d32d5cb5b1a397397e1d9442c13f96713db86914ed4460e8f1bbcb04a2065107ab2c051ad5f2ca671b290df1b",
    "signer": "0x5968d7FD20b3da74b6eaA11CFf1F802b63C1cc15",
    "userId": "518873206"
  }
}