{
  "manageEntity": {
    "action": "Save",
    "entityId": "799058735",
    "entityType": "Track",
    "nonce": "0xd6626af223624a882999c02a8efc987087ce75552b42914ef18c9ba195ce8303",
    "signature": "0x2a0d603c929b82886fb437a89fdcbb95300a9702e2b629eeaeebe4a2472bb26f1f3d3f95d1102d8f5c436eca9e32568684c460435696eb069c2294cc55218b4b1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}