{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280558715",
    "entityType": "User",
    "nonce": "0x15c0f9fa1d510686d3e191107736dae223c84609c39d771f9f9890ba25ddafbf",
    "signature": "0xe2b3c555c327c513745a9ebc3b7f70dd611adc8c8a0feb5b880735ec959ae1f32738a5eaa221840a44e3cb750bb3e8f3894de5728517aeb279f2b02c90a8aefb1c",
    "signer": "0x7D273271690538cF855E5b3002A0dD8c154bB060",
    "userId": "1"
  }
}