{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd761a0f488c73ab483aca5ef383c3c8a4f4ae7dac312a7256f5cba6b954bd9b8",
    "signature": "0xe4947869bb3a725f92f5a2e3574fb5876338dacc695fc5928c5c8ed765d5e0d8546ceaa62e7afe68168b73b91d0fd9255dccdf24a4f1b87cff2c09a1b6e7a0c61b",
    "signer": "0x5148115eBDf0d33ad5e7B95c0bC8897aFF0aB1Cb",
    "userId": "740998209"
  }
}