{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0xf81630ff71fa5748789f2431a9fc0ca79cf7ff84f9ea530dda5d2d74e099575c",
    "signature": "0x08dbf73b6752b5fd5833a381b22fe440106a62d93bdab6830a783aa6a53fc26b6292110b97e0ec955989d4a4bb7fba0eedb78e7e5b3288b20aa9c2dc3f7484c91b",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}