{
  "manageEntity": {
    "action": "Update",
    "entityId": "245183811",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4421a78587b635e884b682a5ab049de058f414ca897aee8c19219e09714869c4",
    "signature": "0x8306ae59226f10e9d5d7054a3b18a0d1159a048d86c321938ecb70dbfeaf81e31167a8d17eb9f021661140e29b0d93e7fd7dddba4950e12ac03978eb9ee61f0f1c",
    "signer": "0xe7252BdAcfC61196976DDEaF6F7fAE234001856D",
    "userId": "245183811"
  }
}