{
  "manageEntity": {
    "action": "Update",
    "entityId": "900317466",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xde7bc9fbe105983f533b6a7af726f9777f30dbc4111df4d00756ef4cc5837c5f",
    "signature": "0xfb7fb69279f21c95a64ed0271e5a90e10d1d2961d2935fcee3448dfa33964063678585c54f64fc6001a0a81efdda823ca0d4ee246377c541692bdab0c5d7b0e21c",
    "signer": "0x8753be1E2080456972D962C479A639bcbAD78F87",
    "userId": "900317466"
  }
}