{
  "manageEntity": {
    "action": "Update",
    "entityId": "153953200",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc5966f878cd8475092f7c4fd4b0f9b12c4f948319540ac75adb6caedc19429ec",
    "signature": "0xb71e845ba64a3a17450cca6d49d389a79b4bfdd197fababa314500ef5686476a6105f6adebcb17dd2a59ff3d7facd67354cce35da75f86aae8c05f8ebb52b92f1b",
    "signer": "0x66328Eb85eC084dEBA0eF7BFff03bd041aD37A5c",
    "userId": "153953200"
  }
}