{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "629972",
    "entityType": "User",
    "nonce": "0x99f9ef2fb59601c9f5832bd1ffc91598727e8843adb154d293f71669e81c36dc",
    "signature": "0xc509d1daa6f6bf6b9ea804b670e2425cc7df41b656ca7abc2b05fa4f40a8053a44b91b105fd3b683d9fd0bf3c7a6b842d212e664d0f8ff0f9ccc4255ec01bff11c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}