{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774209",
    "entityType": "User",
    "nonce": "0x28c2452b3c708354205ff5b353e30f9f1a6851e8f4b778a569093bb78205f9a0",
    "signature": "0x9a68ea1f7b7e1de588365c832d824bec4c3881ab6ced805f574ba9e6c38e4bac1a3e3f2c69f58277c9614829100956a1c1f06fbad1029702fd64ee05e56360211c",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}