{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "623802085",
    "entityType": "User",
    "nonce": "0xb499806fe997c0ef26ddf5dec284ce6d14f51a806e1b599e1dd27b4c6c3cdc29",
    "signature": "0xd1ec7880ce48672d3bc47eeafd2fd7ddf1c1b3a3578dcf4a409501680bef0b0d1653cb45b68aacbf1ebcfe086337e9d2f554aa7e1cedc39beb5e39bbb1497b441b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}