{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "359348843",
    "entityType": "User",
    "nonce": "0x4d6984f0e1cf8e2520632a1b1dcba0188da54653ca66ac1a1ca9ce223d90a844",
    "signature": "0x255a500d1b7351ab103359a81cd09b9334b10df58caafb55f65e85f6eedde57e5d6f5c526ed4a509ef752c48c7029103834166c888eb8e38ec624faa45feca681c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}