{
  "manageEntity": {
    "action": "Update",
    "entityId": "640804276",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x628f350c92ce0c1f6dc357501c2b7ace2c27d2012ceb39f991e23df31a53a1a9",
    "signature": "0xc9ca36d8fac77eecde66b171803416bcac3789ee5804b9d0ad788af7083dafaa0b9da61ac4c9ab74bfd68184a59e53f735c250206ad7d8298a804fef73768f101b",
    "signer": "0x2fff57D5628D87Ce98d02775C9cF63dB765aa6c5",
    "userId": "640804276"
  }
}