{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x44d45fcd8408c509464146dc4174aea1caa2fd5c577778acfc2faa8b9c6ff7d2",
    "signature": "0x72183f6d9f4756132c62d4a46c4beeeb7f548528cba7abea225c6f90090338e642e5c6e50a52d57a60930e91dd9f8f1200861e73dec7dc70a51d99bcfdb37dd51c",
    "signer": "0x3d1f5e3F6460cde7Fa05731285C580814759CD9e",
    "userId": "562961628"
  }
}