{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "678556080",
    "entityType": "User",
    "nonce": "0x3bea4db1fb844aacaf0a6d2c7ccc8706e54375f2140b42a22378e56cce0e30a3",
    "signature": "0xc29e378be104c0a54513a1930a5c5d94ff0c44e2222991ed9585ea0afb837e8a6c81be4aad47e24d079c616323f75e29fc173c5d2aebb1adea559673afa4f5171c",
    "signer": "0x27eB4b469aE053b72c26B3e9c68a655390Fe24fB",
    "userId": "42216"
  }
}