{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8c02f3de87418b8b0ddf3459767f7120d4c4521edf4cec9e758d7263e0b2e393",
    "signature": "0x091fdf079da6a41de9d21f133098645ce1430300d2717853c3d2700f831f29f30701971caef53789432094abcdf35d63d84367013930db208b9055257d50335e1c",
    "signer": "0x310B0B7191C46Ed776c4A40667e783D2BeC03A21",
    "userId": "546045336"
  }
}