{
  "manageEntity": {
    "action": "Save",
    "entityId": "1174875254",
    "entityType": "Track",
    "nonce": "0x3113caacf20207476352458cb788b50a64161b4893dff3e05b21a535ab569d67",
    "signature": "0x6eb7a86796f7d3767da0348ed9c240558b61b080a19b2cbf4ac0165b0eef9ddf664b914f0e9a123d6a1e27e271621f5d384504a3a45e680d1b4ac6a0e814bfa91c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}