{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x8c59ed30100bd347804e6a93f557074200b72b378092b360931cbb5f1a6dda2a",
    "signature": "0x99c62e0a48782141bd692c3bba1cafb341295d596aca1e74257f7559b3f811db52f17c4cfad777be10976ff0571a5d3a110e12ccbd69fa11671e7eb0defb3a311b",
    "signer": "0x325382279630424A96726a642a0de2C40bABA799",
    "userId": "922166032"
  }
}