{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2b57d4d39e262bcb720cff63b7207d011a041e2522567e1749ae70509b85a3fd",
    "signature": "0x1d0d0739999e682ec7d6d063baf3ac78b32b7c3b0030915123bb67c51d4d2b9e62c89c8e80e1d61917949e8a2a581253a36c6b21110dee80447309e067c5809c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}