{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333449",
    "entityType": "User",
    "nonce": "0x4cf564cf9b6a7aa723458680d1fda8220bb542ccbc814d6eeaacc97c9e978913",
    "signature": "0xcdde26c7cba69ae56698ae1d75e10607ea4bc7e868657bb71f8306fb12266f546c97e39425ad5896f258fea321e5376f1109d45c2b552908f69a21528bd032381b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}