{
  "manageEntity": {
    "action": "Save",
    "entityId": "1104265",
    "entityType": "Track",
    "nonce": "0x4bc7d949eab9d470a79563b80fbc60994c35a6d2c3a3f0f8c3cc1f19a9436ec4",
    "signature": "0x0507b45a46ed561e962cfa50afdc0b8e67e99fad7deaee87be2602151a83465a639451ee9162a561ce59534445681054dbaaf0c4b4bf113255d517efe83df8f61b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}