{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389958",
    "entityType": "User",
    "nonce": "0x0ded0bb5f3a16d814d62e95bc9c6e586578dab14644ff0af7233589dc33cbfbc",
    "signature": "0x7acbb634b4f6b03179c5172da7f4a746360c491cd73aa610a4cb5ab47e7f35a36ccc13fe6337b9f5ada69745bae696b36ec7fe54d698fec2a1f587a2a72854641b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}