{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142709",
    "entityType": "User",
    "nonce": "0x68a02e5876aa286f67767e6d1bdc055f1ba628d50b9b0210cbb8824e4fe36313",
    "signature": "0x2628a6dce30b062dc2be25d497ac7140e175f2a15fe99eb1d5d318020e2945a255eaef432858846ec991aae85d7c6dc7ee9968753e312fe39091bd9154b43e1c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}