{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "451691735",
    "entityType": "User",
    "nonce": "0xd13af29f559b31f44dc8de1598248141d0c2c3bde265e1ada47a954bb528296d",
    "signature": "0x8c379e09a1051b3c1d29d8b670acad3849cfd1dd290fd284e0de7588e31da79757662e87e369f7f833b0334a1c6c2d1ccd379c4511ea2c553984f8d7deeee4171b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}