{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381576190",
    "entityType": "User",
    "nonce": "0xa658cb1968858953f5fbfc8927938153401da196b3e01b31a13c9cbb58727036",
    "signature": "0x1f2f7564e9d2666eaff81f7e6897733814aa552885aac0caaa82c7edaad3dc42799bd21467f912332061bf5f43bf0a0c31173e46e6aa3ebeae64b42e60d5868a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}