{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16564",
    "entityType": "User",
    "nonce": "0x5f5ab209e7cd53642fce35f54f045478273a4a8b3d97e2c8ae4c1b221d2ce23b",
    "signature": "0x52c6cefdfd777f537b7c5fb93db4c8a82e2ab7cfcb948e8505d0886f66ed664e616b4b54f9257b9466be44ab4a3fc2d8fb0df8be9771b85a1e4b23e7c46359261b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}