{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb319c3673dd442a94b00cec19c09b53dbb5a38712cb388556db302e04572e4dc",
    "signature": "0xdc2ce3f87b5b2b57af2e1b3cde031ea759ca4a7cd7d016602866fe1e049c6d212b16e5133acfe5976abb2b962b7c1edc745b445b4a652b25ef1889d2f111250f1c",
    "signer": "0x2663bAD5117E3F648993449DB070fe37a2Ec7D4D",
    "userId": "7574399"
  }
}