{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "134943",
    "entityType": "User",
    "nonce": "0x681ca6335bcf3ddbdee526682e646dda4adc8e1221900803d4a72ed9630a03f5",
    "signature": "0x31738b56b603f8248f24566b131d454da4e5a8eb6fdd817a087088ab83f3e5d20c5ac7c4a3c741080394d4f96234d3a51f4530012f45551472514045b3876be01b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}