{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdc8e9f748bf64b8d7ea26338e11c7fcbe143cef009502976120fe77602375a04",
    "signature": "0xb9c1f7bee43b60c610aa50e646b0605b705c43e52e8dc31b85bdf7d4635846a43eabb88488da53842489bf2bdce3f130fdf6197c636222abba0cd29ec1b5d5421c",
    "signer": "0x8F323d0D01390c0D60Ff442Df719D54B65B943E6",
    "userId": "521782306"
  }
}