{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xa745dbb436a92776ab5949d2ee633178e6f61e22a559614f5c8a4c3695213d89",
    "signature": "0x08e45b5a42788574dcb160cb46fb1731b7b5c30a68b3df7db10fdbe6dbafb50651145b0ec1ac1c97517ea5bdde5c0315949944e6051571e4edac7e208d0dc39b1b",
    "signer": "0x64F598C81c0625EA190d421bEe9C604A9EaD5ea6",
    "userId": "462839245"
  }
}