{
  "manageEntity": {
    "action": "Save",
    "entityId": "1319577398",
    "entityType": "Track",
    "nonce": "0x62034fcf3ee50a5f4b6385d8627f8d200ec648fdb7a1397ad64786e9fd33eefc",
    "signature": "0x1cc45d81765d9220d1cb542fc7c76d30715e7e9816b5b0aa914b0874757036a74df9ba7397043c4c73300c06d54f343d6a13dcbc0c1b329b1d10fd7dccd8dad11b",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}