{
  "manageEntity": {
    "action": "Save",
    "entityId": "1080806977",
    "entityType": "Track",
    "nonce": "0x79990484d9daab55fbf74e2024dca80a6a096549ac3ea42f6570585b1b3b8893",
    "signature": "0x27939e8e273e81473c8828ec0759cbf031dd450511829b8047444baf3a2e88350ce2d5f5f4a210cb6a2aa66d301bb8fdc5562318470e583e2dfbc13468160b6b1b",
    "signer": "0x6fb79570A836Ea8554ad1D745C12769B22f1e4E3",
    "userId": "283478"
  }
}