{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301373",
    "entityType": "User",
    "nonce": "0x21f5d1aa7edba087018841f02dec0ab026e1f2870e47f0a1a2874b1ea8e1f8b3",
    "signature": "0x2d26b14c6d24db225597e5bab64a66ac4fa8d913c6603170260fa937b99b9dc942659c36ce822b53fbaa109648090562d92af7bfec879f37b9bc0f06c930c2f91c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}