{
  "manageEntity": {
    "action": "Update",
    "entityId": "612810516",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xeb7a8a8da6838233705c2dd38117b875e243bdb3828418b928f5e198ef1a3896",
    "signature": "0x6fdfaa0ca9ef5f46b68c88d58081392f5b6310a8a7b440ec4f940be98113dc392d2d990f21ab365bfadb8e9c62667df3885f503e6331a9ce94b0b77d17a816a41b",
    "signer": "0x73EC7Ff9D0A38b4ec5ea3d4Bd2BB426A6B4CF512",
    "userId": "612810516"
  }
}