{
  "manageEntity": {
    "action": "Update",
    "entityId": "753807502",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaa4f182a6b8b1fc1ae1ab762d6c277644b63ef1b6f03ca9f156ab835532652ce",
    "signature": "0x1df1cded89198f93613b00ae633bac2a9184b7886f841931757bbc55aa6d7101388d6366f43309087031f49c2c06844c71dd95d8d1a04f20207a2739c0e8c9a81c",
    "signer": "0xF7F32441263345Cb41C1BfFa72F73f7302a51D80",
    "userId": "753807502"
  }
}