{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x72307717f587b50dd98fe8765b223573655b5a6b81d461ed4b6c6f30e35ac9c0",
    "signature": "0x069a11786e385c7983593737c4897cc3f989c4ad266b12680169b0b5ade327ae3113c687534b5889d5cc7277ed452f9d6eb51412f01fca49e75df45bfe6439c21c",
    "signer": "0x59c0f1E371bdb2C9b431bFF30bDF17A9c61615C9",
    "userId": "224200519"
  }
}