{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200149",
    "entityType": "User",
    "nonce": "0x0a449a5c4504981c5552271823b4bc39ab07cfff19e86b337e62752ce8ce091b",
    "signature": "0xce72059838e9d5056ec8102cd946b44de182a87cae231b1ab2f25c238a617d1f24d978dd474e4db7d9c0870ace603b323892f81a668d0e5389daca7bac98a2d81c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}