{
  "manageEntity": {
    "action": "Save",
    "entityId": "2098430923",
    "entityType": "Track",
    "nonce": "0xf0beda195d421c76cbd95da05f0c220c18646577d170f3be55ac186af4e28b96",
    "signature": "0xf1d286e04ec38308b4247cf7f2f626c7535a6c4df8694d6f04ef43e5e541ac27308c6cd1237ebdee086e4ae52fdf760f9fa0a88b8d2261e674287c85afaf12101b",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}