{
  "manageEntity": {
    "action": "Update",
    "entityId": "547925274",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9e3ed9623713d3cdde9dcf53be222f91fe8820a831f80a47a39d8edc721b8a3e",
    "signature": "0x37ac203a1aa4970ff65d7612f08651a802f415597b8b11ad131b21d0baea34387a5bde55a8d9c0276a8311db6acc2dd05eced0d26bc0267d089ed0015c93c9f61c",
    "signer": "0x129cD5f15608Aa6d10d553f85023e9f6f6f30d9c",
    "userId": "547925274"
  }
}