{
  "manageEntity": {
    "action": "Save",
    "entityId": "1186138672",
    "entityType": "Track",
    "nonce": "0xe148053d68a68fc9f4741351a3ffa6043018ef12289218709d0c7db46bc4f269",
    "signature": "0xe9c39d0c6a2958769a33bb8871bcfadb5f6c34ebd0a885118a4b4a9f40c7355015866984bdded19fc6916b2d37c12c589d00cc80640ade2fba8b4651ad76e0671c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}