{
  "manageEntity": {
    "action": "Update",
    "entityId": "772806374",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4b4b19f5c58c148e31c8eb4c463e0bbbf6fb98fef7449a3b0e4bbc7b33d69b53",
    "signature": "0x0b88c05999630833396a8fb9602eb02b412aff82ce78cda33fd64f731b23625e270ace46c11f1360cb664a8972737c486bc0cbc2608a3c89da0e595021e076c21b",
    "signer": "0xB5e5765F248235c24b77fa8Fcf79a0b4f6880bF4",
    "userId": "772806374"
  }
}