{
  "manageEntity": {
    "action": "Update",
    "entityId": "747291502",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x63c61e8189332c4df038f75342cb2328110f08cb73ca9d3d8830edd3807c8495",
    "signature": "0x661222cfbac2c4e69be1e19d1b7ec7e8593f2de1a956f0d5409c86e2129a2cba5420a9285548bf138c0b9da8d0f27c336a6b1fc0c12fe7add4d75bda165a061c1b",
    "signer": "0xa4D14E2De7F2f2aD7aa7E9249BC61fcBb5af822e",
    "userId": "747291502"
  }
}