{
  "manageEntity": {
    "action": "Save",
    "entityId": "25588052",
    "entityType": "Track",
    "nonce": "0x9ef3ff65dd3771115a8b4c4492e43cba4e99abcf6d45ed18ef9d132095307428",
    "signature": "0x073ab511b7930a4fe92cbf9ca07eb07844c5ecb4c28ae4224587114823b3fc4814256dbfa0bcac64d5997a00e655f151999f5eeffbcaf9c059e91e741599dc961b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}