{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "883812378",
    "entityType": "User",
    "nonce": "0x0ec8fe0bfab4ae0464296a9b9142cf1b90730f65ff765fe86db6a78d08aa363e",
    "signature": "0x16afbd11dda5ba55b9eca35cb7cef552d481fe29af428ecc351908553a3021ec5a196e1a3f1e7f3eb39576ff5181fc54a21ed9b79cd3c3751fc824a67ccb08401c",
    "signer": "0xc74a5C0B76bF95109EFE2119058182fD3D75EA63",
    "userId": "222972690"
  }
}