{
  "manageEntity": {
    "action": "Save",
    "entityId": "854782",
    "entityType": "Track",
    "nonce": "0x19ba1606854520a5d47e0ba25ee830fd4c0ebcbcee3f995488ac3ed49ee10261",
    "signature": "0x054ad04740ca05fb5ec228feec8691cc4730c159a7d82fd9925e1b390d8443b4205861ef9e0231ce1f1c7daeb33b3ccf396cdf0eccf9c0b1f9e94c5f1121bce61b",
    "signer": "0xa8E11aa224d2579f5cbdb912866bCE84Eb10f9dD",
    "userId": "951616224"
  }
}