{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508263176",
    "entityType": "User",
    "nonce": "0x9450943d90117fae2c6559455ffa5ea74d816839f7048e1de345f35998d6a3c0",
    "signature": "0xce78da2631adb0cc05b61df132a8f6f672838031e18e4b31717799fbd27bae9939db36371c3df9fc1bfae8fa16be112ea287adc1f3bf791f0c462a86922636c11b",
    "signer": "0xDe6128EEdBB4d15D391871267E286E878C7011B6",
    "userId": "144906061"
  }
}