{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "424142613",
    "entityType": "User",
    "nonce": "0x94e47952bc3ca2fe34e5170fdfbbed3299a10c860aa81be219994400568e1d30",
    "signature": "0x1b091df3b8715ad55eddf16662f00ffb843c57eb98594f79c4a8927e631f1cf0551d74813f0731ecec7b135e06cfd22f9dff625b40cbb6d9177916606fb4b6071c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}