{
  "manageEntity": {
    "action": "Update",
    "entityId": "640804276",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb7e5b60177375b93e2daf8380ea497a1e20d8da177b8875b6a86f86ba71986cd",
    "signature": "0xee6bf17027443920b7ec9f60b139054e29fac6668008d2439658c487fa5a4a134ae1fb81c7759013d876a6f28887fadc44695a58b146122d6903be7ab5b6962f1b",
    "signer": "0x2fff57D5628D87Ce98d02775C9cF63dB765aa6c5",
    "userId": "640804276"
  }
}