{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "67755",
    "entityType": "User",
    "nonce": "0x939488a7d391bb66af1d55d33f45a1da346257bb34f3a38e0575eb94a40f700e",
    "signature": "0xb7cf5689c6764dc2220460ff5cfeed750f1a74160b5268441ff4bfc71e46186f094b356968a5ae24d9fdff07170e0cb6dcce0e7b02265ad72a903f8b27c25deb1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}