{
  "manageEntity": {
    "action": "Update",
    "entityId": "821058285",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xffcdb856ede80e3f09054e0545f7a0fd423abd08fb365ac4b8b844083bd3caf4",
    "signature": "0x55f87c3e9962375e62051482bdda5b61f8b49a01649bb21ea7c5851a4081a6bc0414dca9f1d57cee8183a4096bfa7e8304ea6fc264fd6ff0c467c01bc27f30ea1c",
    "signer": "0xdca010dBdF68c902FA6645F901F92eeA1017981f",
    "userId": "821058285"
  }
}