{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "619100053",
    "entityType": "User",
    "nonce": "0xba0176703075c25daa07565f5645c91aa9e8164968714d512327e98b47230ac3",
    "signature": "0x068290363ab67421adccbbde645728fa20a070b00df3e71b132111a7e87af45345016338fed60ae1fa242051b503636cab0a22dc3ea3cccbc9dc6095b60f599a1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}