{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "505696814",
    "entityType": "User",
    "nonce": "0xe5abe0b8de9c97bc52155b42321a1ed55b59cba4128f14f4f97c9e58557d3a0b",
    "signature": "0xde8f309bd4a372022fcccd19c13b3cc5b60276f213a6506bc588fe3c073e725a0ab68d6b173b8460ae3c303fbb4a725ed43e9d8f39775ec8884dac7ff6f31a541c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}