{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0xf701f0c1747151d53547f0fd46c8fca1bd7518c7299cabe52037729d80106134",
    "signature": "0x87e4eea147c40564a3156941029dc8c15c9088ddc1cd3362aac50398dbce4edf6458446cd83cff2ef8a9409366ee87ae4c91fc74efaf784b883b3b7f648452311b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}