{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xacd68c7b63fc5bc1afc0055b48b938bda72472c210d8db971e427aab0e82f8e8",
    "signature": "0x2cc6edb7e344ced74519c10cba6010254d96d7b6bffcc82ef651df9be52badc27c03dd1686dbc2d0283eb9625eff1391406f305be1a137017f62cc8389e859b91b",
    "signer": "0x878992A9832A31e4F81083E6C9a3d3868ca174E6",
    "userId": "135582310"
  }
}