{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x50b840b9a179f12be340b8c6492e8a2fe20179bba8d6b594cb0bb5f81bb199bf",
    "signature": "0x642c573379dc17b62e3bc14bf3dcb61666ea4496d2593522cc803ed92549d7940cd99a83e530902e0d8756de687f7c7add36a8c7c1273cc273b8fb9e054e1d531b",
    "signer": "0x8497fB9DF4685a1Ea0D6057dE3AF05FC8d768252",
    "userId": "488680673"
  }
}