{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "997939",
    "entityType": "User",
    "nonce": "0x5fdc7de090b0776accba728dd7654f71b36f94f051c6bdcf7340277ab22a9ace",
    "signature": "0x7cd59536b58989f3b7725051418338866d8d07b6e4cfba68fa9f8ae39476f2d66635c868764e3f4f783ba8a75e1bd74c35a7b5d92b49ca5de1b7abffe7a2ed341b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}