{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa77e1cc21c18132abb466f03e8cc561af3277f3739d3314beffe0fb68355bde9",
    "signature": "0x470e936f738f288c40fbfee971005593dc51c639e4009fab4bc7e83c15f64bf927ee9fd61406c66a190a2deb2e231d407e160cbd33a9299b9720298807296a691b",
    "signer": "0x7F5473dca3C593d21d2389D27A0A93fAD3935976",
    "userId": "788939644"
  }
}