{
  "manageEntity": {
    "action": "Update",
    "entityId": "149566028",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5715321d3de3bb7e9b1050a6d3bf293018fa5b80df71199a1792ba6d5f1cae90",
    "signature": "0x6db4f926d1820406efafe64fbb19561b7c35a3ad79a2bd2abe6405f42eecae082687c3ef3e4dd52009de4630fd79770d09f7637954ec3d2fddd3ff247876b34d1c",
    "signer": "0xfa1f98f0530E55C2BEFA45f0F1B3A699b4559136",
    "userId": "149566028"
  }
}