{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "655790469",
    "entityType": "User",
    "nonce": "0xa0c503e0f37d2e1c0fe11102d4c64778aca04f7afda7c5be1c2f74b4e01cef4b",
    "signature": "0x6295eefc7dde4def1bb88dfc8057caeee9b3cfbbdc5be3051178d9d3333b9e44327410a9a1c2d41ca449f7cf0e289d2bacab859e7fc9b9685764baf6dca3a6cb1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}