{
  "manageEntity": {
    "action": "Update",
    "entityId": "711916520",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa978753714aaec9a86b7129a7c037c679a822e3c690052e11ee5ee3f7ddeb48c",
    "signature": "0xac49ba5f05ec89a3069ce683053fe8cd08c77651b1c441d15d2dbf18713efed06c5895c3f28075535bc262e8e73f4fe074f9772e35f9fe3a003b040446f0da3c1c",
    "signer": "0x12363B07f27899F5852425dC2902f076A0053ee5",
    "userId": "711916520"
  }
}