{
  "manageEntity": {
    "action": "Update",
    "entityId": "879781386",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8b7d7263b3718d4ae9707c40e33305e76296525fc22b8fe60046db029a0566fc",
    "signature": "0x3c219efe98080e1b4877f338139e1f0ed7101649772ad1c3904476c4077c0fe77076fe69462ffd3d8c9a521182ffe20856de9569d957d985d509ee96083f492f1b",
    "signer": "0xd44dbA6cEb05Bd1A61C5ACC8cEb7B97257aCd78C",
    "userId": "879781386"
  }
}