{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "71489",
    "entityType": "User",
    "nonce": "0x58087a37bdc023981b547978633ef56ac86d643be5c42506255e484d61d395fc",
    "signature": "0x97c869a809513e9b365dec43d3f1205ccd688d02c79d8dacc49433d57e01640d4df5225a16af578fd46a52dc7ef030fb0e93513f622b2c913ef16875454f656a1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}