{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfeaa039eb5e6f6e910954b13385be4f2f4f842a519c045cd1a57c3027c1700c1",
    "signature": "0x704f18373fd04185486064cdfa55e513bbca3d097eae5c1ccc270517c33844c92b3e171aaeb37c4aeb90909ef197b51552a8a93a3056365f3790e6ffd8ec96e01c",
    "signer": "0xA72FE6b3e29606836C66bB1c369b98CF57B8F1d3",
    "userId": "517196922"
  }
}