{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1645942",
    "entityType": "User",
    "nonce": "0xc425877292dbf0ddb2daf043d5134d536a5b8ddfbf05a25d0f9e9b5383ac9c40",
    "signature": "0x690b583210ce9aa40540e0b05ff26734613e6e6d063ca0469cbcb3827f18877b0d194be495764a6502363a746765c497f20b1da51d54336eb6e7977e9c71915f1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}