{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2015445",
    "entityType": "User",
    "nonce": "0x1837deaf21c6f8d4bef90bf24ab9caf5d8570b61861283a8c27d9123a4c1b6d5",
    "signature": "0xf874fd201f6da0e8af6a0eaaa62c1c5e1848b55557624f6cd2ca38d09a1e7bcd4ccba856e9abf34c37ae3e56225dd60395ea1f2ed1c2a20aff470384452f52b41c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}