{
  "manageEntity": {
    "action": "Save",
    "entityId": "14708255",
    "entityType": "Track",
    "nonce": "0x4ec2f9659371c180452aa9a08637f069de9f7e58c7e71a02f3d65060052fed45",
    "signature": "0xb6665ab77294a42bdd44f1f2d1d172f8014c54b28038aeac9f0348b851fa2b6f3ba0c331f5a839f363ca486c5dea11a306faacc4b728e9bec7495bac80c2c22a1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}