{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3d73773e6b41a88ff3a101c741f3405a9f836812287c534da0ace9a72e403b4",
    "signature": "0x455b703cd9215ea833e41df3d9a89e61bd172707a7494ef59791e6fabbb0df390ae0c11a51803c74fed2a9649704110adcb2a79ebee86a23e1ff2281a3ab929c1c",
    "signer": "0xFf228E824C034e155eE852eC0CFE377093dff042",
    "userId": "587434573"
  }
}