{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x4282f79a82843be64612ed1375bd14c4264f7f7ec9b7c073e7deb0e60695dfe1",
    "signature": "0xefbf59c22657f7bcd09de7f799e2779682151f8880b07c70827c606934a0a29235c3275a052bfd07ffbe85dc0e59179373d063f7935794d1bbc84b3107e4c4d01b",
    "signer": "0x3c6Aa744893389cd4CBFa53fdEd080B463b6984B",
    "userId": "326811555"
  }
}