{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "733676803",
    "entityType": "User",
    "nonce": "0xe476623837039bbe09865d0b4c342315595dd2f168bf8b4a928b508c79d56c48",
    "signature": "0x67dfd606fc0bd61f32e01970952b5ef99fbd42978a0cc299552cfdb6999bdd9e73f07efd8b1cfa198a20a788a1b0aa4e54aaa58f2c85cc5284f1684a617199a61b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}