{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77371",
    "entityType": "User",
    "nonce": "0xed4013d840346475a320cdabcd3e0fe09a07adb8e1a1ffbbe3d8c7cc39778acc",
    "signature": "0x4323e529a1726b24b05973d47b9cd2e1e6e434485c2b2c837d7acb70a2a772e23a54ab1ceacff93676e87475fe2951ba06945b3f0056247dd4e8d2ea33d21b2c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}