{
  "manageEntity": {
    "action": "Save",
    "entityId": "2109577130",
    "entityType": "Track",
    "nonce": "0x4ccac8085bc250161e761b9f7739a011c339b7670a70f4a638265d1152dc3b92",
    "signature": "0xc9943250def484454756662d209ee721eba0312ffdb07447f55b02b1d5eec28814ea28de6723068a39721a95d3a2b2ddcc6b70d2d03ecd58bcba3b1ceb87bb651b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}