{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "775959",
    "entityType": "User",
    "nonce": "0x7967e214b4655e310dc2a9b7368611888cb2bdfba395601c6f71bca7f0d11d30",
    "signature": "0x0ff77ea4fe6ae85bc41c0e01075d6e9fd8d6ba6a797ebeb8575810b3eab991b40957dc7e3a50f1317a0b5175025018526ac32af1422abeb7214a7a1f1bd101991c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}