{
  "manageEntity": {
    "action": "Update",
    "entityId": "877708088",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x64bae7a53682ae8e984ba1ec7b20c0ba1371929dddc7df9b1f16525d314be6bd",
    "signature": "0x10dff4cbaed1f07287bcaaca0f77bfb2a2493dd6c05886e61c1ab1c57236aa183aead8641eb6a55bd43b2399cb6f95c4a57b79bf356b224d0e55881aec4617ce1c",
    "signer": "0xe443035A663FD9bc2937156808C2f91B6029A96e",
    "userId": "877708088"
  }
}