{
  "manageEntity": {
    "action": "Update",
    "entityId": "281589352",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x420c5194106b6a50afc3af8306a7278066417cd56cf75dd28c9a0a55bed62072",
    "signature": "0xdd7f9f88a9c4360c06f286c96cefd392b0b120241a4d95f0381fd8cdab2329b14817c9bb7219c71af5f8141a88f25933d3796d60e929d7b7cf46845f36beed551b",
    "signer": "0xE8e175ea2857dc61bF8dd825960B9EC6930D58eD",
    "userId": "281589352"
  }
}