{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2223",
    "entityType": "User",
    "nonce": "0xc2d46a0302208ec6e9cd66f16a5950d9dec5e8e97a4c76c0d0dba38b56620ffa",
    "signature": "0x710c6aec1bac0fb84bbe3f2f01ad9bfeaa4a1e9643b11c3e771afacac7fe19430d640c88f3707d929b7057ff8940d1821cf0d09caf079838a03efc56749544661b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}