{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "628865",
    "entityType": "User",
    "nonce": "0x5e57b7c16affcb7dfa6caeead17faafb66b3f3d0dc1b0cfb6e6e7d50e7326df2",
    "signature": "0xc9f1d07b938a9a2ca464ac9ed86de74c3fc9c751aa332816bb85c6913de5095607fffe78e8588279c819708415706b494ba6878182e670b82395d7cfc2ff244c1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}