{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "407905",
    "entityType": "User",
    "nonce": "0xebf359d7e27a6ae87acd1ab5d7683ae46c6d0be1bf9e34d53a4f016b8c5b9d30",
    "signature": "0x873841734b848353e1add17cd4e937a1896d9f3c8808f0bf560a5820fd8fcf7a0cd44b5539e5595ab8a5348c3a7cbfa91db2784591d60a987c6ccc80892f13571b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}