{
  "manageEntity": {
    "action": "Update",
    "entityId": "519995777",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x27e3a7dbbfce1e0b13c8803fd5f07d74b50fab2e0b4bb3ee8f799b9c2d5d86a3",
    "signature": "0x6f2ef32e26262234a94d2f56b9bcb6d1a6a7ad625e5fe0d6e961ac79a96f59593547547053048d6144e472ba626684d19fa070df25347d23e18e6d53a6ded37f1b",
    "signer": "0x345F527120644cd5f6AaFF3800A2aF4498dfe219",
    "userId": "519995777"
  }
}