{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420647095",
    "entityType": "User",
    "nonce": "0x6538ae0de51f3fc11c54183b4554f183308fd322ed657bb40a6d496b0b551014",
    "signature": "0xeb04944f2b33f43c34a4712c56b38dbb0074aeff25bc73fa3e779f1639d118f757196714e0372c97f830af2976c3e866cdbe92e37af10acf6f9ed54429d4eac81b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}