{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1543844",
    "entityType": "User",
    "nonce": "0x8a75ea6ea42969a9b4480d9921b1bc4f7aff2fe90c161f0100d7158fbd7474c1",
    "signature": "0x57a250df2695667463b557dd5b84d30f8e057ae93cc94761c4bebd3c1f2b66045a2b273f95baf3da5cafda0f171b700a3ea95d28c1a7dae0729a0624d2b87ba71c",
    "signer": "0xB8bF557DC997cD9e10AF5CcDddf0D851f201Cd90",
    "userId": "806523887"
  }
}