{
  "manageEntity": {
    "action": "Update",
    "entityId": "452538230",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0011770ebd13ddace5b4a31364ac50aa3647528b1ba6893daf7ae4392ce0163a",
    "signature": "0xcc3566cab25ce6af0da6a860e1fc0b9e4e1fc2b8b36214ff7e26fe5a8e594c6700cd06143e586e37a284e0b2933469f81e633424ef36103c9089f4bbf31cbc6c1b",
    "signer": "0xbB8F7748e70F44FaD716ADB4127A3C2BCC75B832",
    "userId": "452538230"
  }
}