{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "666333288",
    "entityType": "User",
    "nonce": "0xbbacb1f250057dd09830384db055ddf3afbf4c389dee32bf38e2f0063ade5ac0",
    "signature": "0xed1c15fecc8085fb14ab3c123e34bcad017dbbf60880935333e0b6ca93dc4bd92cd28b6f8898ae1e6dc48577219d5952e7f7d81adb2f1d35baf447b18486d3c81b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}