{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xf1cbce21fd3720ba79f0cf2b947da3430576864412a9134c786317e8303ea4dc",
    "signature": "0x472a8249680d9d86d1d675939e0594d4ea35a59fa7fc49405a3acd2b755ee76073291b3408a7d86050ccc112315cbbf6d5607112c39b3d776438309591933cec1b",
    "signer": "0x691141FEE5693C68A0D1808C84e5aAdd54786044",
    "userId": "215489670"
  }
}