{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0xbe0e2135616f49f8c5f6eaa140ee0412f4f2ba144d93d3ef971442539413903c",
    "signature": "0x81dfd83ab71bfd75e1c5a78c8122f51636eeedf696f63983ada3eaaabee86df346887fb4ce48af1d667d525e74f7d203a34399d380361005529177186610f5471b",
    "signer": "0x8593e16347A4E22E2ca49EA7DD9C24C257c66AC0",
    "userId": "213423670"
  }
}