{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152450",
    "entityType": "User",
    "nonce": "0xefa6061f3012a2737d8861bbe3c75ee952aa7faaa48dcfda43161950810055f0",
    "signature": "0xe75fa267e3cdc86156807382626fcfca226d1df87123d5968ee77c6cd80d6a547651eb952d8f4f82a4e87535bc2919e083b7dc24ca7ce273cd178d12bd0b28021b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}