{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1137",
    "entityType": "User",
    "nonce": "0xd7a2b713f92d4f617086c86379bee950f755e9235826387710e083fbd881a0af",
    "signature": "0xc42fc3d80b97a0daf924c9e3163eff6ca20af5a43f643782053b2a9dcf5a772c74c2aacab9693247ae74bb3ba6a09ec416e0e96830f7aa10c91fec4b920fd5291b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}