{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x76dba3405c3586f645b064a8621f897ed9bbccf44173341f1a7c5afe0af82910",
    "signature": "0x4dab0fbe94d108ad4f50a81437e79506bd5370a3eb3e77fdefa5d7ce7d2ce5ea78f1d4ad20abe9f4b987c95dccb5dd329fe75198503310e66ff7e804f26dd32d1b",
    "signer": "0x766163A0b3d955a3C5B4e2F3b4a1542d26f47207",
    "userId": "395188301"
  }
}