{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xac8f5794fbec4c7fe3e7faee6537376b9237730a3aa25663d6309c6afee5fa1c",
    "signature": "0x4a2f59f5c7359583ed5940ef006ea93a02966b13bd9f2bfab3507b7ac996aa595c0816576769aa1a0bbf81d4c2ef19fa2908b5c6325b450f405466bde5ba99991c",
    "signer": "0x3FA7F2Ab3B4CE7482C7A14fa8f2d9a056f6C192B",
    "userId": "383215156"
  }
}