{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "671469376",
    "entityType": "User",
    "nonce": "0x2c72f59df09877fa413d17a8b4e7fc0887be08c9b551429207d464fa4e7dfb2e",
    "signature": "0xf11cd4eadc541fd4093a49e92726cc15bbd478b3be2b8ff14aa6d209ee852d80311c7464bf18d4f1c256cb7839b03e2e1ea3d4dce85151472e21044d0cb1a0481b",
    "signer": "0xc0621be31c1D1B62b94F2d48eE34dD3c3dA9D57d",
    "userId": "161438318"
  }
}