{
  "manageEntity": {
    "action": "Update",
    "entityId": "3790984",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfa90bb43a06496c05ab41c962bc9f420bf77c26d91f88eacc21c1aab3518517d",
    "signature": "0xd309c6a9d24d32819ab3bd22c2abfe489c68132fbfa2579713c2bdd0e0c96473273ba83461421b13fdb30d174908f00f4445a1843cf8645c329b262e68618ad01c",
    "signer": "0x936222d539A82b8FfA7faBBeAC7b9d5952BA7737",
    "userId": "3790984"
  }
}