{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "189558402",
    "entityType": "User",
    "nonce": "0x04ac9110d42383cd6dae723e899c56a10a2ee70c77c7978eb215dc9f75055974",
    "signature": "0x11700fe97e3567edcdfc2105ecad5f891c236f186c7b401a3056924f3e3efdeb728d6f4137937ed56f0101dbade55bffbe1c8a6375a2126c31676c7d4fe1001c1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}