{
  "manageEntity": {
    "action": "Unsubscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x555737816502904a74bb261d0483c5aacd54a9f48b31a5597c93854b47874b7f",
    "signature": "0x7891897d7c87006ca7a595ee69ebbc74c06f7d4c7bbc21f1adc5915d32b0c5371a1a2e16b524c61aa5183b4f8452a3b6ffd61373e4c6da2ff6a53d3ddaa15f231c",
    "signer": "0x09Ed944A6653804DF5E864d5240c837F643E2c0F",
    "userId": "214509563"
  }
}