{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x2fcd52767f0c503e25bd96d599eb83155d0c7850293010c33cad22f0258bfde8",
    "signature": "0xb0e386f3d35ff14be0b32219b0aac298755cbe2ae734ca9090dbd31a2a7288b200f036d2c56a3642bda848195cb9eab486f6b3f62cee353874f8333c0773302e1c",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}