{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x749a6fd20a79c43063ae0f0e94ae87caa7f5acb1a3385e243573a792ed79d598",
    "signature": "0x9d9d093845eb6b9e30cd4f45359f9d5e1b0c15c76bd104420706881c97394d065322d59e76d1446b3074b29f41491c1acd152a70ec4b1736ae908bad377823081b",
    "signer": "0x1b3E9Ea15dF71Ced48bA8E493c9BBBcBFa25823a",
    "userId": "913385866"
  }
}