{
  "manageEntity": {
    "action": "Save",
    "entityId": "1511661517",
    "entityType": "Track",
    "nonce": "1792311766888193357",
    "signature": "0xd6cae3bd9beed440015a9b8ca81127f12db55e765eb75cdbef1119f8296ecd4105c39f70b1b99329b60924ca461cd29214d15ad8dd4acb9409a3106cc9d4d5e41b",
    "signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
    "userId": "451691735"
  }
}