{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "230",
    "entityType": "User",
    "nonce": "0x19ad681528550a8087dc44a4f7cff77ac76d980ecbf7680273d8ee1e11d769cd",
    "signature": "0x7e23022fe9d1a2f69d9b64ed015b8e3b55833b4ab07f274346ac35f57fab11cf33c2ed8635924fa66da42cf8186653cc3f665e8c926ad1d3f5083da0b82764741c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}