{
  "manageEntity": {
    "action": "Update",
    "entityId": "918602404",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb9c876761354c0444e237816da75829709b246e6eb7a90b8d6758219eef475bc",
    "signature": "0xc5328cadb84e67bb8161388ae4893686a797717fc494cc87094e86b495eef2c91d3090ac5d83ecd30bd3fc5318dfd3d0dfa1a5a82677dd088b0c0ec3d4197f501c",
    "signer": "0x9e6Bc923c3B1A420BDAF7b6dd8E4a6Bc51f0DfFC",
    "userId": "918602404"
  }
}