{
  "manageEntity": {
    "action": "Update",
    "entityId": "387348748",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3b8f4b4ab5e6a5517796eda60b36a8897f4411c403eb3529ca1d0f3d0d7f10d8",
    "signature": "0x78d004330f002e99be25cef28bc3e88d184b1ba39d42050c2cbdd0ab1327d713681b68880304208eed88ff69994108b0afbec3cac548cb1151cc01342e3f123c1b",
    "signer": "0x113B2F3906eeb49B7FC6d3c5b9Ba254F87019006",
    "userId": "387348748"
  }
}