{
  "manageEntity": {
    "action": "Save",
    "entityId": "1647884272",
    "entityType": "Track",
    "nonce": "1786653284909292343",
    "signature": "0xdc69cd778405da4159bcae8f8eadad611a8ffd3d840549c23ac911ab9d8ce54758397aaf7d0cf8932da1a03e9d6e688571d1481ec186abeda6f6470ae9a0c4d31c",
    "signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
    "userId": "568518925"
  }
}