{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "340353",
    "entityType": "User",
    "nonce": "0xd3f78495ac2b6e0b3e61bec1405b78241778efad87059f40b7a0aa988771557b",
    "signature": "0x2ac9420acab758ff116493662563446a24548ea648c07100fb7eb90f0a6b659206700c805983a0145f186b4248bfa568ce87e5ebc9a89bbea2dba4b1b400f88c1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}