{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0x5a899e83b1fe168a0be5bdce29fa51eeac6c7a5b758743360a89a69e6f3659e6",
    "signature": "0xa25fbb87eb19377d8afb5afe4799a6c8931b125fa8b93f935e23a9a5a297c1cc5ca657cc042e75dac6e625ed99a67ef3e28b41292078e5961bcae9318266d1d71c",
    "signer": "0x195d9eE11400245E841C02c4b4288a90A8195e91",
    "userId": "103785872"
  }
}