{
  "manageEntity": {
    "action": "Update",
    "entityId": "814929010",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierak4u3d6l6jt2zpd3vk4dvumxrlms56xihacgebdnvbyylczv62ajq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1157820743},{\"type\":\"playlist\",\"playlist_id\":1306709195},{\"type\":\"playlist\",\"playlist_id\":1449615738}]}}}",
    "nonce": "0x2c9ca1772d74acf65da2a06991b3c6e68faebc9ad994e40d9e73079d0550aa53",
    "signature": "0xa1769ce405d561dc1c55707e4b69c2131dfc47e62598438b09a998b969af10573c91a90b3cc01e39cea4013180c08b8ee83225c179b6672064c0061ce61a39d81c",
    "signer": "0xEf3d3c6df875c67aa35e9F473e01a47D659c95f9",
    "userId": "814929010"
  }
}