{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xd21ff9f2895172adb7265a7e4e12df1c0064e2760ecc0f2815ca7e00bace347e",
    "signature": "0xd42b5df7e3fc22bb87ebac5061f37eba4bbdaa034b6cc1be03a27c4e2a9679b852156371f2785e394199f3ee8e072ed5e88598ba7ac2891231b10439059202331b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}