{
  "manageEntity": {
    "action": "Update",
    "entityId": "209686301",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierayrbsgynpar677j24ni6ncez6rbpnaj5wxo2yi67mftu6kmn5ksxq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2115423733},{\"type\":\"playlist\",\"playlist_id\":722974781}]}}}",
    "nonce": "0x95047083d81189e9ac4328b5dce1f7f37441fc65eda8351445e5a8253239ca0c",
    "signature": "0xccc3d565c532bc7fa1b2d563053459688028a4e1250b2521f4e2e7d637f620f7195a9b39911a56c8b843c4cf571f547bfc6c8915ad62107baf4c5df2e7c50f921c",
    "signer": "0x8132B158578e2d9a33bde55ac683a86E1791cfd6",
    "userId": "209686301"
  }
}