{
  "manageEntity": {
    "action": "Save",
    "entityId": "1719051064",
    "entityType": "Track",
    "nonce": "0x2b32e96b32579223148a114d907952f2cb277cc1c0e7f6465c0587514ba8c7a7",
    "signature": "0xf9a6a0866d63ff17ccb9ca64ece988ced753d1fcb4315b27070355dd1cbcd2d1227ec0f62565336d9666d0f109f21a279e00505775ed4d8870493198007ac6fc1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}