{
  "manageEntity": {
    "action": "Update",
    "entityId": "187420095",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaa2e03cedd1e62d725e1568a84dd34a8dc49a89b1386c561fdb565e7b2a607d7",
    "signature": "0xfb71a337aa16409bdfda3546da971d7e27a87cda9ddb9798a9269bf4e72b257c48b22d482ddee2cf364513f7eaf89c77c890b06f9b3bb08e4d95f24bf13f7d9d1b",
    "signer": "0x191A921fB1E29C06eA43703831E40e484b09d557",
    "userId": "187420095"
  }
}