{
  "manageEntity": {
    "action": "Save",
    "entityId": "924375626",
    "entityType": "Track",
    "nonce": "0x3433fecba82b111eccd1afbd7f7c2fb03af1f5c17c0469c4818c9653680e733d",
    "signature": "0x5aa8513a406ef2e2a2ba86c95569c5a0d6778535909cf1518e8a78b614c3275b13defe63eb49bf49b84b52d4a498a52ef19ac04409749c265337902a94af729b1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}