{
  "manageEntity": {
    "action": "Save",
    "entityId": "1284772034",
    "entityType": "Track",
    "nonce": "0x453d8328140f51162b379e7052d0ecf81a8d9abb16672b3be17b185ffa0b2d08",
    "signature": "0x649f48ddc45818e3cf5be57e9032dd487f77640737c6665aa43c9218017d1c5d22fec96ea9560b28a39832d1afe6a4d2f47104369e508fb691981482ac82d7641b",
    "signer": "0x97eAfE883FbF33a8b75f6f37440caFE5CC452d3f",
    "userId": "849776474"
  }
}