{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0x6a2defa5595a9601dedc8034b3a77c450a0f6a37531bf1eb47e2024ea00755e2",
    "signature": "0xb1288270dc90c95f552256fbd1f1b8c94025d4ee4d418b780bfe42e5c6ed2c897ee839a784ef70498a8665b53ef935af4793453fbceb85d125f82afa3d7414cd1b",
    "signer": "0x334b140fE9d685A0b45ADF4b1666b979432E75c7",
    "userId": "550101899"
  }
}