{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313331",
    "entityType": "User",
    "nonce": "0x63659eb66659c948946e7811f728e9503c0f134a9113d0f450593ae14196cde7",
    "signature": "0x19322e378f06cd56160a5ff4b7782e420288469e2321fcb00207917617181ba205dbb0dc3aaf3a6110c30f8aeeb0cffb30e7872e5b44ec035d6869885d92957b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}