{
  "manageEntity": {
    "action": "Update",
    "entityId": "783122944",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf622eb2605a71f27238fd29c82ed189c269642029f7f30fde4e5c06cbf4a2bcc",
    "signature": "0x97b2934cc4f5c3e1523b715b9837aeb6dee5561b04feab1947ac8477e799b830676ebdffa99f5f610165b81b05ae079c05fa6033bd31ae3e09eba6b18b55ac931b",
    "signer": "0xA9AA853e2FF22EBEfC92cE1fe6E12b88851a69c7",
    "userId": "783122944"
  }
}