{
  "manageEntity": {
    "action": "Update",
    "entityId": "721987098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe0ed1634155c4abc5819fdeddf17f5a8300187aecd52a6412f76097e2b427266",
    "signature": "0x6e1810237bc56c845a14f551249d2b8458bd1308da643f059e3798a4468baa5d74d1de367db58c7422073d434d79ac019fc9ad97705836f6405d1d00f4263def1c",
    "signer": "0x4c2B6D597D288449d9F215489E66f1cCe1c85B8F",
    "userId": "721987098"
  }
}