{
  "manageEntity": {
    "action": "Save",
    "entityId": "217784875",
    "entityType": "Track",
    "nonce": "0x7dab838045dfc40bbf30a6ac9530a4443b7d37236ce64634186aac4973b516c0",
    "signature": "0x4431e666109069145bd5c8695cae7a740a92d9581e0e3c0866517f787a11b90904e7080f95b19038e2a3b67d81b576fe082c739f768f29b27ce438bb77da906c1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}