{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154494769",
    "entityType": "User",
    "nonce": "0x874b4e823bb5290fd6f162e5ba2017835143d152831107beded4c0ef17bba338",
    "signature": "0x22f15c280ab008878c0bbe8b3b2faff899ef00d4e2694be872b60fefbd8e652409181b82f7ca8c79293b9afefd16a94342930d763ff05bac7eb0404470afc5f61c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}