{
  "manageEntity": {
    "action": "Save",
    "entityId": "1262297710",
    "entityType": "Track",
    "nonce": "0x7a5a463973fb4a29d70d96191bef2ce7d317b06211f2b686fd1d36cc134167e3",
    "signature": "0x8c4259095528f05497119dfa650a273ef059a8b656231c5069fadd0a3242688320884942b91533f843459495a411ae5ee45ed9fdee3c320941849ae46bfc81901c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}