{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x639ca7121237ea1e4e61b03d06f0c98c0fc25462866a04284117a2f4465f1b19",
    "signature": "0x9eba91876c4eaef059e7c4f50498a9a74e9e7ed4ef7b2fc981d19f2a5fc60bf22350d4d4250d0a72110f4e9cef85924027566e73da748c76082a9c4b768d88631b",
    "signer": "0xf71586Eb853240Fe8359e1780d2991F9082570B2",
    "userId": "356173480"
  }
}