{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "48500",
    "entityType": "User",
    "nonce": "0x2dc214998ca02fb3f077479b0e5f23efaed4641a974925f2828929cfce5503bb",
    "signature": "0x2e04e4baae518bee933fd3fac1c86092ed36dd6aa173dc30088d63358833575f600ebe8b7eb905a049afd5f3a771f79d69596119fc822f89850dab4be842d9b01b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}