{
  "manageEntity": {
    "action": "Update",
    "entityId": "331375509",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7dc845cefe29a9113e351ce7de913e77dae2ba71a66be82361d184018b8c5a8e",
    "signature": "0x3ab12f855aaac3dea3ab57ec457b444d4fba1aab2cf61045199365289ed3a8033280c572538ff02581e1cff6be4742b1375d29df663d8e8cd8cf79a6b9ea7e4e1c",
    "signer": "0xA7918C87dDD243c00f953b896f5B365b622f86f8",
    "userId": "331375509"
  }
}