{
  "manageEntity": {
    "action": "Save",
    "entityId": "94562147",
    "entityType": "Track",
    "nonce": "0x78481ff0e17c5959960f91accdc2db4ee80ed9d31708554f84f97c2d5a36f562",
    "signature": "0x16c57f7a329356cab08a43ebbbab7ee31572740a26998ab510ab687199659c6b6e9c3e6d53eee39e1385d9a627492bf1628b88125f1f5a445c399c9491ea17a71c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}