{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "395996456",
    "entityType": "User",
    "nonce": "0x5ebfd74b3440dcd79cdba37b18dd4c9883ff56975d99817ebd55e2f613c5e246",
    "signature": "0x37299c8a628c6836f0f7fec2ee72a10e0f114b98ec376294009e2e4bdd48b10855e2e3414102edd6203b06f17698e284a70b6c3f16cad98138839f01c4c5a6e11c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}