{
  "manageEntity": {
    "action": "Save",
    "entityId": "1030066279",
    "entityType": "Track",
    "nonce": "0x9f7a4af3ada0fa9496904cc880723ef7f42ba25b8d734ddd40e82fc4740796fa",
    "signature": "0x14ec0b0e291870fc4815eac0682622dff9fd46e01e2289dcdd97db4d9644ce4a16b2a6d75cae3de5374dd08de6fae832a786470bb5097eefe162bd4029ab078f1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}