{
  "manageEntity": {
    "action": "Update",
    "entityId": "966943089",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x12f3b4413f17e0b1937cf4c42845e2e3e2728701fb7e3fc3de9dba83bd7500b2",
    "signature": "0xba601a35bcaf853c98a081da70b5dddce9e2a0d1ffa1e41779659bf7b2d2251f0e1a0b1d035686e0fa728fbc9a101e49382fff844ad16e1a2db5ba42189655a91c",
    "signer": "0x16154056d7cA96823a10994b08601cD6e4B9495A",
    "userId": "966943089"
  }
}