{
  "manageEntity": {
    "action": "Update",
    "entityId": "644767279",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe275bb0931cd5386a7c578e754fe168894a320a27108a2e2bb88716912248e8f",
    "signature": "0xabef51ecd070f2828109b29322ad31b4f499f2cbff422a55078b7de8a7bc2a334160ef18397c8d6eb6c8c5500f2e6c8951d5f16645101d6dffa18950a62f32461c",
    "signer": "0xf6c9943016137F3054658e7E14F51B6d271aC325",
    "userId": "644767279"
  }
}