{
  "manageEntity": {
    "action": "Update",
    "entityId": "687305535",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7632e67376db8bba7ea84ad34c03b201a92397bc5bd37b16311351eac02854e3",
    "signature": "0xa86f5538d03aefd1827039743d7ac5049248423f48997acc9facb330e1f4043e28d71e59498b8efd179554cbc4c7acd693ecd53d3e748d457985a33c06d1e3021b",
    "signer": "0xD0b2Eb9b9b524f6152055A9e9ceDd88E7714Ad5d",
    "userId": "687305535"
  }
}