{
  "manageEntity": {
    "action": "Save",
    "entityId": "1354335034",
    "entityType": "Track",
    "nonce": "0x24577a6904e7efdf6d6aea0c5aed89c9c34bcb8ba37fbbaa63a622427cedead8",
    "signature": "0xb075b261b1c65d7c3d3f98341b5168d361a2fffe1f951f3ac2809a37d2bedc3c0af2ebae089240e0813007c97793236960422ef5694c0eca28496c8194fc8ca11c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}