{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57441",
    "entityType": "User",
    "nonce": "0xd5d9177e3bf903a93b2dcecaaaa3c1f516e4fd8a91db7d394c6e91589f585f55",
    "signature": "0xb2d3fde5b0955468fa6ca5a2f60cd9b8f09993c1e720e5c17d905871cc638f9169e8f57d1dd2610655dc9264e91b3f73ce4e1434326e3c05a7c49d668f599f911c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}