{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x928740f5f2532bece3d5c2c621bb9962dcadc7f96f2cea768bcd9a715308d5bc",
    "signature": "0xe802122faf7ed16d77fbb3450d0fe1085d8553ae2c0259432c30ecf4c6320a9b50fb484b96201f4795021b709cc9fda2c22bb16deda84686a3deb8407a65ef941c",
    "signer": "0xc4ED754a5bBD176F596aF6d483c4b0F8A9B72530",
    "userId": "995186910"
  }
}