{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305316",
    "entityType": "User",
    "nonce": "0x219b16b262b03ef90afd86f76cdda8d826e7dd98bdb701ea1095aa47252be98c",
    "signature": "0x6ffde4c9ce2e958c79a61cfea59ff745f626f7df3ff46f05dc7ca147a00e1ef965bf803f7dcd3e87d329d0655c4b65a484b969ecac09e71587c90e973a60857a1b",
    "signer": "0x2Df83D15c880275a0138820cE2009Fc85eF32C65",
    "userId": "107618708"
  }
}