{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0x13356004b16d03597395e3cde58b8cb8aee3e1b7b4217274033ed6f4951ecb1a",
    "signature": "0xd1b3aa468bb69648c174b282f4b78d3a4a75d17e405fd45447f803312d5c867740f33cdca388b835e9d57239a876aca4678e2f040da3efbb4b6716005a01f0d51b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}