{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0xba8a0b15a1dc9b7f61dce828385bb78883784705afc94c34d6f6e1e28c706f11",
    "signature": "0x1db9ca95eb227d551f7de0aecde847bb60440c090f3393ca2084cd187149fff351969d483abfe871f35a067b0f5708ab269d8f325309e9c09e4ddbd7eebb073c1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}