{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1867438",
    "entityType": "User",
    "nonce": "0xae83a904d6cd0478514ac92db4c318723646ccd5641ec2bc10d5c4f48b56a795",
    "signature": "0xecacb9783fa2e20aeb9b525b55d3586ba1ac1c41ccc6ed38ea32c6748bf5ef9f6b97fbbb33a4aa26bd18b9fa4eeaf1e6613114aa3e97b93a374b1212aaf6573a1b",
    "signer": "0xCA34537176e273Efc43776B70B5c70CdD5baE067",
    "userId": "403911835"
  }
}