{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0xb7f091f49216bd074d6d34193d8246c20a62dda5c992c760ccf82a743a4bc7ad",
    "signature": "0x8ebb8266420e8a80a15293ccd678948121f02c7f0fdeaeaee586171af8596fd049fec772ede18dacb4aa9d96d7ea2d76e7ac889048d4d2329dafe2ded780de141b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}