{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "915709378",
    "entityType": "User",
    "nonce": "0xf2c6dfc65824ccf52e225a77ef8a5fa28373261ed932bda5d3c512fea7f57fa7",
    "signature": "0xfb591192477a1b57ef471212befee27bdfef28eb1be4d001fd765b353e83c8694f6b7aedf9653f7b7b62203c2696234940daa583bc91ed4b2a6780881da03fb91c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}