{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "189818",
    "entityType": "User",
    "nonce": "0x3143cac22c4802a24b1a7d466944d8e293426ae4e704c7ee0c99faf87699805d",
    "signature": "0x3c2c03cd84bf2261dbe16d609ffbbb7df74766571d9d0daea7c3d207e19aa908041198af02f6a9c5bd47ef776d28ea53271a60c2fd3937804fe9ecfc032cd3121c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}