{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1903988",
    "entityType": "User",
    "nonce": "0xee65957edf39d1dc23f300461ea775552a4d2246b74d561f55104ec76a20a96b",
    "signature": "0xf4b5770be8c86a6f342533ce1fa7fa830345a8a07e1ccc1f459c72255b44de8f66f6f8f0d30da2a9e01928dfc272ccd063489a3ba3423443881a1c4ab8c594891c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}