{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x415e92d2b7b7df4dd8150ad70383ac51dabb688c70bab6b1518e280e8b5f1982",
    "signature": "0x7bd7526364e99fc6cc8c347241482ea5b857772c499460031597fdcb5240e2dc7f5b901c980364e355ce06498f2b288b9bef4fba84a00471b5fddc6b88e802b91b",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}