{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708150",
    "entityType": "User",
    "nonce": "0xe93e78c50dfb8e18063d33453fc9d2820b756de69fb6b7b3f8e34518c037c759",
    "signature": "0x7f79c748c000255a2ef58fdef74bc63bad0743df91a6124241a5f98afdeef9e3360138a53134e83b6c6c23f2bf9235402029965246f8ea6198156945090c61b01c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}