{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390804",
    "entityType": "User",
    "nonce": "0x5713268bd5405228c20c7f7ce17c2770e596ac968936e756ba5da45ed696e950",
    "signature": "0x116b6c99e76d2fada6f29389e3c7476c7bc1d6cf4f95511c74e91e5c321d4374032d7ca268b9779de99c2d27b4f4c7fdefbded1c1b333d41194e1d7062966aed1b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}