{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "773501378",
    "entityType": "User",
    "nonce": "0x1c855a502222402253e0746bd2e949bf6e1176f84568055f74ff8a4810a5fbd2",
    "signature": "0x68045850b08479b6150fa5ff7853ad08c071bdf4c232dd8e00b5938fdac92e874fad33a891fc5f96774fd9ec8af46c28e5e851e2eb13e7c65998e0b76bfc2e341c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}