{
  "manageEntity": {
    "action": "Update",
    "entityId": "304643654",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6ef8374328f00d60bd48de0534a26ac3cf37feb1081fc260fb9d25ddfe607f5d",
    "signature": "0x23d3e492218643fbbdaf36cdf10145d4dbf21a84f91f3a8681af86f5ab793ab7553e5e178d710241ec76bb6eb0f0b06de134fd2343dd78a191783721b6b063de1b",
    "signer": "0xbc45a3eD7750Da4ae1BbCB9892a1D2a67632c1d3",
    "userId": "304643654"
  }
}