{
  "manageEntity": {
    "action": "Update",
    "entityId": "731336000",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb0ea60b81733eaf8934fdb964ac240bd005495f916ee313de210165535e27ee8",
    "signature": "0xc7b0ab4373612376638edfad7a2b30df436056a837873798015cefacfd661793336a0f4bde16e0b53d05f77bf461688e62e35795f9df050bdd49e90803046d951c",
    "signer": "0xb50A921EF3b2d7cA7fe3e233722Dccfc113aFdcb",
    "userId": "731336000"
  }
}