{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "298105",
    "entityType": "User",
    "nonce": "0x8fc9bf0cdda0a03b796a8116d5b66fd59193530e3d90f8f378c8fc1839329e3d",
    "signature": "0x041deae471c7c004cb2d3e3b2412a852d6b290fad31831279f5ac007d179ad9f5f7d990afe630ed2d16fbefcb8fbb6b92986321aa010479417e525d148faafd81c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}