{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329513359",
    "entityType": "User",
    "nonce": "0x122ae030a694872954664a6852f0f5e35fb2eda8898583b711b75307f377a1e3",
    "signature": "0x47bdd89b811a33753989fa033956b7e5360be0e1f7356b4a4a5f67900a901b325248212c9a822c2e5c9022f2c20d8d411491b3a45d8059bcd216d5a469cbca391b",
    "signer": "0x4F8e40E75E675f5be20520c4cEA0CbD7bBb999B1",
    "userId": "991796067"
  }
}