{
  "manageEntity": {
    "action": "Save",
    "entityId": "142955",
    "entityType": "Track",
    "nonce": "0x31bf0006d4a691c2db424e4d675215e052526cdf44b0c053e2ebb7796236bfb5",
    "signature": "0x04170bed047a5f0bfb649085ea71b0c10433dbd5efbcee0c9013bab25e4e8ccb192a790c056c90644e6474b4658f84e771d75419b663da9814830d7fb60839ab1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}