{
  "manageEntity": {
    "action": "Update",
    "entityId": "937331705",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3955c62708ab81722085f5264912d038099c9641ea8041e9fa29f3d8766e4abc",
    "signature": "0xccfa2095467e017bedda0859c2abd2de49a8962cebea158d3ee264e3fbc074065d935dc25abcfde43db44521824a6b4a43179e71806cd86eefcbf6fbdb97b3811c",
    "signer": "0x972fB2aC0F87455abaD19aC25234dff9A3227235",
    "userId": "937331705"
  }
}