{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "321158566",
    "entityType": "User",
    "nonce": "0xe21fdab39199b6a2575603556164885289bc3777a63afea33bb45cc848d9c813",
    "signature": "0x1c0ed245c0c08cc0c14bb2e57fd497b838de2950d93d3d7410121bfe67c374fb6465e1de732f4f9aa9e64418df04799974a55728e6c0f45c8a5344dbf7e957be1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}