{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210748",
    "entityType": "User",
    "nonce": "0x819b74027d65d94871c89e99e0b12167a896a466ef897248aacae5cdfd97b7d1",
    "signature": "0xaa7de8b45c965b9813f85ddb4bb9a19f6668feac06b78c8329ba681fbc655e6560946027a6779c774d23097100d1b0a7ca47edcf84c83111796954073a2434731b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}