{
  "manageEntity": {
    "action": "Update",
    "entityId": "319049298",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc2e84e45174ecbb14f0c6338f580ee85754a3d7005878fdf737d9124547d899c",
    "signature": "0xaa1b2c4a4c47fd6d0215019871ab306edaebfad14e697153e28145ba71455f3800774a72a93e5d02910d93d14f60c5959723fd0a026d185ca92d3905e2202da81c",
    "signer": "0x51F0B9CbfA02b6CA88Eb180845C7F8C1B74ACE39",
    "userId": "319049298"
  }
}