{
  "manageEntity": {
    "action": "Update",
    "entityId": "157230131",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa88973c8ed93f24c38681cca304460a151804ed7aa363c906bde4e4f5080a211",
    "signature": "0x97abea0b259578ef8986502fe004721caae8f356352efd77f9ec515d936e59b73dda3e96399a56d229038a247d2f77da0fca6642945a4f9260d5469fda6dd0c91c",
    "signer": "0x637f1e6F5058F9Aed16e4DBDD5F894f75e692076",
    "userId": "157230131"
  }
}