{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75670",
    "entityType": "User",
    "nonce": "0x859486743284813d3fcf188929aaee7e8d87ac9c708d9bffd4b6775933f647c4",
    "signature": "0x51f9e00229df4b4af3001df281729f35902837593b97470c9f28d95f0c80ace9304fe207a8c1cb57fb0076ab866da6cabe4930ba2fc67a5500eb18d47f43c9481c",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}