{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4589",
    "entityType": "User",
    "nonce": "0xa46763dd060d7c9fc7ce1cc69731aad42446d10a491f158a339a34a0a4bbc6f8",
    "signature": "0xb9b5b8aa1b1de98902123b25494ed1b78fe81f299d00eefd6266dc0e4dabce1b253cb9653475fe37fc41de5307b4a731430abab6d81a8fcce3571ce49e3c06381b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}