{
  "manageEntity": {
    "action": "Save",
    "entityId": "1360557632",
    "entityType": "Track",
    "nonce": "0x090f8179378818c7ba120c59e72c64f54ba04a7d926aaf34e9ba2955125a429e",
    "signature": "0x1d198fae9a59c3946b8ce9d702b1862c1211da42f826775edde675b343cccb1b42863cc6261a02e219e2827c3e69d27f5c4adc3814254521f16359b638caeafe1c",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}