{
  "manageEntity": {
    "action": "Update",
    "entityId": "915757474",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf20460fcbab0344b819776b60c0ccd9afa6b87a47f9d94d51824fa3d458f0a7a",
    "signature": "0x4c5dfd344d8e9e3aedeee38c972add99d07823b0393b4d4ef9cdc14315655a9462337392643e8c4a37fda70f09bde2c364d7f7d7a8e24bcca7d35df49c1dcd7d1c",
    "signer": "0x1879513acaaeE1B0980750886f962A71E9f74e05",
    "userId": "915757474"
  }
}