{
  "manageEntity": {
    "action": "Save",
    "entityId": "2091100085",
    "entityType": "Track",
    "nonce": "0x5081f18e41238f80a1c59e7528ca2155f98f812509c9d197ee9505af6d1e82ba",
    "signature": "0x6b3f5d32b770f9f76144146cfbaa0db3a5b99b0a4f1ea9ed371bd7f5160b44fe43c832891778f3ccae203b758fe49152d76020117f981486423395634cc16f791c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}