{
  "manageEntity": {
    "action": "Update",
    "entityId": "731620709",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x844020d2a2db0c2b4543bed4e4f21e374cea795ebb04ce110b383be6f1b4a194",
    "signature": "0x62260f717e88cc44d137d182be113ee2366407999e2efe47cddba046648b185f74ebd5d5a763a4fda4815ad62b1682edbd3f8c953d587fb3f671e3f5c38ab3061c",
    "signer": "0xDB26a8F439E622a798439FfbC77B3801E3320d59",
    "userId": "731620709"
  }
}