{
  "manageEntity": {
    "action": "Update",
    "entityId": "860699447",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb78fe0a6b86e85733421c3312ec191ea497f26d318c64f4490153e47cbdea533",
    "signature": "0x6f95c56b8f356643113a421deecf28e183e5d0bd82c113d566a38f39038bfe6823601e00762655f28f50e4a6728b0c2580444c659b610f37018f7fb5ecb74cd21b",
    "signer": "0xb52E8FcE6ECCedf0147ce1d916621AB9fdA52bEB",
    "userId": "860699447"
  }
}