{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "748910",
    "entityType": "User",
    "nonce": "0xdf52c2be4467bc099b99f4c6a691bde34f610514e6110850a281e8ddd3dbc223",
    "signature": "0xf6eb8bd1880e81e77adac50458b4b71a415d228d2e11820a299c6fc872098bdc141f4a549feb993f67610ba676d9073a7e91b119ba2b3a3ec02e23bd99aaf1891c",
    "signer": "0xcc9cCc523005B394381478381D34DddB8558A28f",
    "userId": "957873025"
  }
}