{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "129439",
    "entityType": "User",
    "nonce": "0x77250b1b600d368313e13f1cb8344ff172aa2eb3ce21a1f9a554f8ada8a7a845",
    "signature": "0xb2c874807f08da78e1e0d16d4b987c8006709733a26042b003317b4ee536c4102ee464741c728803bbb8968a4e27855feb86f595325ed0c957006cd24b767e1a1b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}