{
  "manageEntity": {
    "action": "Update",
    "entityId": "763293888",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x46815ca0350643ad4bd4c31a68185bc23a87c471380c55434f4576db442f1489",
    "signature": "0xbf8d8a77e6cd2a698868cac6f37835700d287c387b3a31b9a6e6e5bf649fc942024c74e3b45e5046a0b3498a0389c5921f763fc888d92b1c7417ef1c2f7ac7a81b",
    "signer": "0x5a12E68dE8459f7c1893E6695B486B228De997cf",
    "userId": "763293888"
  }
}