{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "67600125",
    "entityType": "User",
    "nonce": "0xd742272e24084ff91294455bc6f889a0c7eaa36b1e7fb75ebcb8184c97d2f4a5",
    "signature": "0x5fd375cfcda5106d12eb1d6e96ad881a182884c530739f644ff86fbef058a4154583b452631a9ebbb4374d540c32304241b33fdfec32f62a079c02e8c24fbaba1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}