{
  "manageEntity": {
    "action": "Save",
    "entityId": "1027549690",
    "entityType": "Track",
    "nonce": "0x6267a83df2eec5a5fc019a15ce4f4096b0b016f5914926f0f058b8a2acd2754e",
    "signature": "0x88d227e9db99a27f0e50d5503144629cdb37eefa4295203bfb794ea1272b422c2cf80a3d5117695db3df23df34cfe8cdebfeff32fb3713e31d9a99c096e723221b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}