{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdf50cfd84ccb034f6a53415e06d3df43207d7649284ed189d54516198f4718ed",
    "signature": "0x32574e2c646c87e43973e78c27f5eb7b1aa1ae95c4cd7b2dc77a9ac5df7419984db886fede76016df040689fccdd86bd27bca841ff901cf2d5f04b4a088e6e5d1b",
    "signer": "0x4367939cE810a0f5a5be238603d66BA5eF7379dB",
    "userId": "485745125"
  }
}