{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "678556080",
    "entityType": "User",
    "nonce": "0x54d655d197527170e388ac48113c6fc06be871274f4cb8c9fb466fe0eff33a71",
    "signature": "0xa428cd878dadeef262c130875dd98baf91b81ff034e8688e7253347f6e79536473c34a280530bb114c7a03585f08afa8e1244fb6b0bf2ce259294a815cbdad921b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}