{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "939865626",
    "entityType": "User",
    "nonce": "0x88f95e6dbd10e616ee18a1cdfb1afb0a8a3e41b2630df62ecc2f7a73ac74d074",
    "signature": "0x50ce22aabcf9c0553c3813d64be863b5ab1a7a36c0c54d1a24f92134ce19eeb60a637351f8bb5c147ae715051d219f5cc87f3801b19505fcd88b3559335c0c011b",
    "signer": "0x20a821B898F6Cb6BB0E5FB2460eD4225B40Bd68D",
    "userId": "198400104"
  }
}