{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "776979",
    "entityType": "User",
    "nonce": "0x6c4db1013a55dc2fbb14818a2675b62db55580dc80e377e933ea885b9743a523",
    "signature": "0xb8d66e4f0074d6eb5ff389e7d861d589e95fa2f6cb445152748426afb91651102bbe2900908388a5eb0db5f34d494bfcb388c876855bd7d017ebc638d01d78471b",
    "signer": "0xC49C1DcF81d45f0CFfc91AE858213eA1636dff0B",
    "userId": "622856537"
  }
}