{
  "manageEntity": {
    "action": "Update",
    "entityId": "543666377",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbbfbd2e8ee0e2c235a1bacfd17992fa62688adb490fba73d6fed0ea554a962ea",
    "signature": "0x40aa14fc5ee94e2e2768880ac118e7feaa8b63b345aba36723290b5675b6ceec61a0f5f107227231e0bd9d7ea132745502098b331537d94fbf3ac96b1b3d2ad41c",
    "signer": "0xc1788b014B965A97FbF8C7dDfBb21a9F5fd7D666",
    "userId": "543666377"
  }
}