{
  "manageEntity": {
    "action": "Update",
    "entityId": "610042501",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb4fadcd961a420ac00b8471e89fe074ac0719e4f5f258a8294daaff5cbfe0ffc",
    "signature": "0x0db224beafd108478892846e4efff268a82883b34f74d4d8a90c017960ddfb795c9b363ba42c86410fd502385652a7568c406d2a98349a9f559a79917c8d243b1b",
    "signer": "0x3b454c37F04119cfca2897Ec632809779ee5Fb35",
    "userId": "610042501"
  }
}