{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345493",
    "entityType": "User",
    "nonce": "0x5e8b1f16bc7e4223aa665f54fe71864a196bfe5d6717739c26dbaadde49adb8c",
    "signature": "0x932db7e609807081e51319952c337e4635719ae7cf5ced4149060fa47afd2ec024f4414593b90d447db97e711755b30a1b369b50052838144d58a14df07385591b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}