{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5776",
    "entityType": "User",
    "nonce": "0x6530aaf0c807246e52e2f311bb0c597a3f76d14a7bcc8f962f74ed9c2f2ae2d4",
    "signature": "0x6dfe4d5914aad84fa91c8bc5e78d23b4b7e227e3582714d0a5f66167a58ef6ca1eb0620e64da4a31e437c3ca558a7f4ce72f31d0155ae71c68b76dd1a4ee97a61b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}