{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x654302c68d20ae4dfe04f221ed188142a88b8da5c937b22ae3b61fd0cdde144a",
    "signature": "0x0c19bb000ed84b99412489a4decddb8f4558a5924716ab0bbcf7a5c25763d4255c79f9814df872f09c01e89189d1b06757dc7df40446fca8a02d6f4723653dbc1b",
    "signer": "0x245cEbC9574d38Ba138112B36a6ee27cFCF48cBC",
    "userId": "75458976"
  }
}