{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "66609",
    "entityType": "User",
    "nonce": "0xc164d739a80bf680ca0a696228d9ec05cacbd8c7023332f1044b033e332c1121",
    "signature": "0xc1253d083ed121664cc48772d135971cfd46f1756125fed2a07f292dc14a2b2f7461ad670160ca9d2107bccbca67343943b0f3499f7a4d074768b2879ce1cc971b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}