{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "249424",
    "entityType": "User",
    "nonce": "0x55149e29756fca93824027a80fa8418418ffa116171dbad752a0a05f4194d074",
    "signature": "0xb770e7140f4cb9cefce7581742db55f757109a69bad8c7cd63910dce4e8a88717ba2f0c8eedc19e1f1f50bc8ae8f10aa99607e17daeb7b32de7e1c15714d85fd1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}