{
  "manageEntity": {
    "action": "Update",
    "entityId": "677555125",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x442275387e139d43a8344d025505e4d26e98f7fd74e9b37952275768bb703d53",
    "signature": "0x4749ba5301a6a103daf33d552130d267d36d997440e8155a978c706bd4c07cdb61c874732fb43fcc5d8bd92c384d4e4890461f04d42498d700c9482a990a0e611b",
    "signer": "0x78DFb3273C763696A43106907732780CF2A4431d",
    "userId": "677555125"
  }
}