{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "978580446",
    "entityType": "User",
    "nonce": "0xd8f8efc33b2eb708128ecf8c555dbad4c874f38341d3730a058ed38285969848",
    "signature": "0x64a7ed3992b9cd1f64be212f82096fa21e0350e02be9ca96a8f26dee3a3daa297f858a0b2ddc160b8a3328783f5877d38e804e3dbceb61455798206f631e26d81c",
    "signer": "0xd9bA17330fFb3Ea1356C5eC14971D9e1f2cb5200",
    "userId": "337125448"
  }
}