{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "954705651",
    "entityType": "User",
    "nonce": "0x2d89c6fbea8bd2656704273eda861a7f3c3c1eb55278f18363bac85287877a66",
    "signature": "0xf6881a8c1fb716509b03c8a4d0d3e46fc6de41a5e40d8078c4abd54817ce3e872fde2b2f71e7001b9aae2ed6a635d3e9c28b954be12458d14eb345de86be8e521b",
    "signer": "0x1EeF7f4505C388ca4a4B9A8fC01FcFa7c805D3c5",
    "userId": "17766667"
  }
}