{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "407382506",
    "entityType": "User",
    "nonce": "0xf138ae384c775aa1b87f673a74c26bda2abbdaeb1634fffc18e325e7f8befc40",
    "signature": "0x84fc304b2d2e7e5b22ae6ac96724147bdfabee66ee8e76a2990e735f111389c21aef34ac1c8e74cc27bd7cf7493a90f41246a0606ae5be75bc409fadfbe41f581c",
    "signer": "0x27eF63fC244fa3ab58E50F97D79cfcFCDb20F966",
    "userId": "777257668"
  }
}