{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781543844",
    "entityType": "User",
    "nonce": "0x17aae404360fa7201b64a4b56e9b57a35749ea985bf17261a5b2548e919ce03f",
    "signature": "0xccbfe29c0fd6a4e31a69233cd52ef721f263b6b77d9ca631dd6792f9fb91e41955ad287d44f9dbcb3cbbcb250567c247558eaa857f1646c965ffbbf0c4bda76d1c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}