{
  "manageEntity": {
    "action": "Update",
    "entityId": "703354792",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2f1b063e8d29189b8114207f64b741cc6b4be61d00b0062d1333e9295848fc90",
    "signature": "0x813c9a76aa9369ef5c7d9a74026cf40abf2b0cdf1847dc77264dc30bf5c1058749c6d5c5e14571da4f9b587079f050791315183759ef0d7440122fc1640d560b1c",
    "signer": "0x4ec0618BF74aDf72181673DDa518f0bf7781DE7E",
    "userId": "703354792"
  }
}