{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6464",
    "entityType": "User",
    "nonce": "0xd047568d9b3389a667f269afe011e56dcea146ce9e360ed50ad7bd3f91481b30",
    "signature": "0xb68f9952f8245c99ebc5eb1ee10ceb327ab2e319d4645b3cb56fa4f4fd1e26ec0326e89509acbf7988dfeaba146708b6479bb6f478858741f72ccb90d5f68b501b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}