{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28197",
    "entityType": "User",
    "nonce": "0x8738ff21b9a48c1de4ea686aa60d44b0220805906fcefea82c4560d740525b80",
    "signature": "0x2b54b1b1e1380f32dc9517f53f8ae46057509ea4fb9bf1ddaebd9295693f5a3628867688aa657434386e949eef8970787adfe3948367327d3c3f71583ff9131f1c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}