{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x7797cffab1e28653a639c8283eb2b809f605a4fe1e1f994d08f54f406754b80f",
    "signature": "0x25d1ccc90bd96f1ad6d7aa6e1031a66f29fd90a23e72ecd9214df12a2826dc18302006e2317e5ac7dc1d7061a7d47f7c65ebeef78d8399fc3b3ef657f34ec6c71c",
    "signer": "0x556D15a5c7676f637104Fb4F811c98D46bad6AAF",
    "userId": "98088512"
  }
}