{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "558452493",
    "entityType": "User",
    "nonce": "0x4b111c21afd2eb166ae4a9c0adb5c90d37b71c95e103580ca8cca6c583bd5a77",
    "signature": "0xade96d658b7bf92f896901d1c7d4bcd0c6ea9e3ebd5187863c9a4b279350a7d83ab32385a868f3ed869efaffe6212eb2c5b6d54c63085838bc5cc124cf2a436d1b",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}