{
  "manageEntity": {
    "action": "Update",
    "entityId": "159748614",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcb87a1d87ecc45e894c89d6a7eebc4161b4b7ca1de6bb0de8f50e1106421e873",
    "signature": "0x9f019af13004d4d65c813492c206648ed4bba61738769bbd94f61e76037a5a6f3d4bee91dbd1af77246ef558dcc09f4c6108ece863a72570ee51a8495f8d3c361b",
    "signer": "0xf4B3142291165C454919CEEB6C914084F19B5b74",
    "userId": "159748614"
  }
}