{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6795520c5bd4682d351d84fb91707382dfdfef1377771620a8ef1f49b3a5ca3d",
    "signature": "0x653babd89fb870db7c7cdef7afcfb623d2a3c6cf1634ab7096c1b299b6c1e12a403384eedb9c085623073daff4363be86c5bd052346ecfa57c5183cc768b4d521b",
    "signer": "0xE89901B1dEF941e543Cd188f6c8c477A1d165A46",
    "userId": "37781415"
  }
}