{
  "manageEntity": {
    "action": "Save",
    "entityId": "1946380007",
    "entityType": "Track",
    "nonce": "0x53b8372ed5eb5e61ef06f0b3ab5a342b11f8a3c3f629e23563b48db53d579892",
    "signature": "0x558286a5baa11e43b742575c18fa40776c845b270a548a299a9232b45273b3f9706200360d80639efdf2736e09d66d2b912297ca68a2885c8a52f3cfefcbee2e1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}