{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108683",
    "entityType": "User",
    "nonce": "0xb5262fe335b940bda68da55c9c49fe829af3d418f2ec06061243e17a92c8a093",
    "signature": "0x3e9345c230416e68075937886bef03b828efd8ec4dae345ba4d7f3830306ff642a52e67b2d058cf2eeb246d41100ea9c801e8fb8c0eec2192f17708355dc81051b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}