{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xf3339c7bd5b035737d25f4532bffb649417c74f8cbdd897d81b4bb5a1029d664",
    "signature": "0x4bc6e47e1f3cf6343a7d049f33595b8358d11fd10c12529c8dcf1c33000eb7a05f980676170eb568a83e3761b3d37dc0c1fa25548dc60219547c2745b902342a1c",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}