{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcb338df3bd31f470cae4b25f9bd088e403bcacde0779e777a17a5bb7d73800df",
    "signature": "0x990c5a39f528117e070fb00e994fb19bd51a7b60fc539c2ae3d9e7e54a96f22844a7ea8f15bf2c7e416c79c49d8063771a37f40ecb937ff8d268dca4215396d01b",
    "signer": "0xa8b44068A4C55AeD58458160E334DB91E5d88320",
    "userId": "309988528"
  }
}