{
  "manageEntity": {
    "action": "Update",
    "entityId": "500234778",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x11f76166ecaba7baaa9bcde6a508c8aa3373a3a9627b709351e4666a81b48c4a",
    "signature": "0x32307bac834d139cf5a3e77268aa2b4b139c42d78adf48af3db0801fae3d3f306e3d3f15da24bbe53d67a14b89264c1cf401670aad2b7e5ac70540f48014c7281c",
    "signer": "0x61d5f943Ff590F4D8d843bd8E5d34816513DE0De",
    "userId": "500234778"
  }
}