{
  "manageEntity": {
    "action": "Update",
    "entityId": "876735576",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xea90c0c13af294ca5aafa3a0212fdacdbeeca729900fb47c18ca70a012b41119",
    "signature": "0x8833b9bafbee5ce2b768b1fda3008613c473c037576a423aa401724e465eaec67f9596779b58fdde3b850908440be4e2312649fa5544283198457a1a95a708511c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}