{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xddd9207af318ba5b30fb36fe792270690a44bd7a7977f11e13d63b29b490433c",
    "signature": "0x86bed9dd701a53c3e2d71f500a2a3c320f2f7dd457195a329367ff65afc7f2b57e32915ec865b5e026ca74a7ed8831e1e1329dff55be04a76665b3047746c60d1b",
    "signer": "0x6A65482563D42729663f117B039625DA5065D1ae",
    "userId": "599973709"
  }
}