{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0x2aac2c062e1aa5d3e1872644b345259eb0994e633adb00b4988de1459b49be76",
    "signature": "0xe9b3c6ae6cf1d5ce444aac85bbce51bd92f750d476ec8f5c60cb5178b8924ce930bd9cf4b596df5e1308bf4394d9fb6737edc6067af53964b3c91b1379a474671c",
    "signer": "0xE5b8EeDD173B8931eA70db62F9C16BDFdAd36e0F",
    "userId": "446625379"
  }
}