{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348740",
    "entityType": "User",
    "nonce": "0xabd1dd2800bde9a3acf208ec9c8b1ad78c284197b67261ac0a327425f58d70c2",
    "signature": "0x90bcdc4b03ff98dc022e71a8707bdb28fc36f57c993218a86efb56edb5b4d8132a134ba11b34de3547a4402a2163abf8c52330dfda30e11ea7f171c7cd3a4fad1c",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}